title: Fluorinated monolithic column for CEC.
abstract: In order to overcome the drawbacks associated with particle-based fluorinated stationary phases, a fluorinated cationic monolith was successfully synthesized by the in situ copolymerization of a 45% monomer mixture and 55% porogens with thermal initiation using 0.1% initiator with respect to the monomer mixture. The monomer mixture was composed of perfluorododecyl acrylate (49.75%), ethylene dimethacrylate (49.75%), and 0.5% of the quaternary amine acrylic monomer supporting an anodal electroosmotic flow. A tertiary porogenic solvent system consisting of 40% 1-propanol, 40% 1-octanol, and 20% 1-dodecanol was used. The resulting monolith column showed good characteristics in terms of morphology, permeability (pressure drop was 4.8-25.7 MPa between 5 and 25 μL/min), and the electroosmotic mobility (3.68 (±0.05)×10(-4) cm(2) v(-1) s(-1)). The monolith was tested for the separation of four phenolic compounds, three aromatic hydrocarbons, and one fluorine-containing compound. Good efficiencies (up to 135,000 (±4000) plate/m and resolution up to 2.6 (±0.1)) with short analysis time (< 9 min for tau-fluvalinate, <7 min for four phenolic compounds, and <12 min for three aromatic hydrocarbons) and good stability (1.0-1.5% RSD for intraday, 1.2-1.6% RSD for interday, and 3.9-5.0% RSD for column-to-column) were obtained.
authors.affiliation: Department of Applied Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand; Trace Analysis and Biosensor Research Center, Prince of Songkla University, Hat Yai, Songkhla, Thailand. aree.c@psu.ac.th, choodum@gmail.com.
authors.forename: Aree
authors.initials: A
authors.lastname: Choodum
authors.forename: Norman William
authors.initials: NW
authors.lastname: Smith
authors.forename: Panote
authors.initials: P
authors.lastname: Thavarungkul
authors.forename: Proespichaya
authors.initials: P
authors.lastname: Kanatharana
mesh_terms: D000179:Acrylates / Q000737:chemistry; D053801:Capillary Electrochromatography / Q000295:instrumentation*; D006863:Hydrogen-Ion Concentration; D008689:Methacrylates / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*; D016062:Porosity
chemical_list: D000179:Acrylates; D008689:Methacrylates; D011108:Polymers; C004919:ethylene dimethacrylate; C036658:acrylic acid